Lab-Grown Diamond Engagement Ring

When light catches the elongated points of a marquise diamond, it creates a striking silhouette that both sharpens and softens the hand’s natural lines. This semi-set platinum band awaits your choice of an 8 x 4 mm marquise center, designed to showcase the stone’s distinctive tapered drama with modern-minimal clarity.

Crafted in Williamsburg, the platinum setting offers a sleek, low-profile frame with subtle accent stones that enhance brilliance without overwhelming. The band’s smooth finish and comfort fit ensure it wears effortlessly every day, while the secure prong structure balances protection with visibility.

Each diamond is lab-grown, reflecting a commitment to ethical sourcing and environmental mindfulness without compromising on clarity or fire.

Ideal for those who appreciate architectural elegance paired with contemporary restraint, this ring complements slender fingers and pairs well with stackable bands or a wedding band of similar refinement.

Should you need resizing or prefer a custom accent arrangement, our Brooklyn studio provides personalized consultations to tailor your design timeline and care instructions.

Explore this semi-set marquise engagement ring in person at our Williamsburg studio or begin your custom design journey online with Haejin Jewelry, where expert craftsmanship meets ethical luxury in the heart of Brooklyn.

See how your design comes to life with our Ring Design Online, or start a truly custom piece from scratch in our Williamsburg studio.

Explore our Guides & Education and Stories & Lifestyle for diamond education, care tips, and real studio stories.